it is rather involved, but also a good time to get those compression & leakdown tests doneJimmy777 wrote: Some of you guys talk about changing the spark-plugs yourself but after looking at the post somewhere here (with colored pics and steps) i think its sort of involved...?
at least do the compression test, then with those results you can make a decision on whether or not to do the leakdown tests
at a gallon of oil per 500 miles, that thing must have a bit of exhaust smoke, no?